Improvement in expelling volatile matters from peat



T; G WALKER. EXPELLING VOLATILE MATTERS FROM PEAT.

No. 108,853. Patented Nov. 1, 1870:

THE mums PETERS co, wow-um wasmusms, n. cy

ttnihh sal that cam Letters Patent No. 108,853, dated November 1,1870.

IMPROVEMENT IN EXPELLING VOLATILE MATTERS FROM PEAT.

The Schedule referred to in these Letters Patent and making part. of thesame.

To all whom it may concern:

Be it known thatLfIHOMAS GEORGE WALKER, of the city and State of NewYork, have invented and made a new and useful Improvement in ExpellingVolatile Matter from Peat, 860., and the following is declared to be a.full description of the'same. p

In Letters Patent grantedto me February 8, 1870, and numbered99,733,;1narraugement of devices is shown in which superheated steam isemployed to act upon the peat, and the vapors passing away from the sameare used for warming or heating the peat previous to its being subjectedto the actionof superheated steam.

My present invention" is an improvement upon the device set forth in thesaid patent, and consists in a peculiar character of mixing 0r pug-mill,in which the peat is heated, and thereby rendered of a semi-liquid orplastic consistency, and from which the small pieces of peat areconveyed, by superheated steam,'through a pipe that is in the heatingfurnace, so as to dry or carbonize the peat, and it is delivered into anenlarged pipe to equalize the action heat; thence the peat is deliveredinto a chamber having an ejecting plunger. The steam and vapors returnto the mixing or pug-mill and warm up the contents thereof.

In the drawing I have represented my apparatus by a vertical section.

The pug-mill c is made with a double casing, so that steam may acttherein, as hereafter set forth.

\Vithin the mill are stirrers, b b, to mix the peat tlun-oughly, and, atthe same time, allow of the escape of vapors or gases.

These stirrers are upon the vertical'shaft c, that is revolved bycompetent power.

The supply-mouth ll is provided with a screen, 6, that separates thesame from the steam space in the upper part of the mill.

The furnace f and steam-boiler y are of usual character, and thesteam-pipe h is passed from the boiler 1 through the furnace f in acoil, or otherwise, so as to be superheated, and the pipe h terminatesnear the open end of the pipe 4 so that the jet of steam issuing fromsaid pipe It, in a superheated condition, will drive the peat throughthe pipe 1'.

The-peat in the mill 9, being heated, is rendered semi-liquid orplastic, and hence is easily blown through the pipe 2', and this pipeiis heated by passing through of the steam and- -the fire, (f) in orderthat the particles of peat may be more thoroughly acted upon by theheat.

. The pipe 41 terminates in an enlargement or chamber, k, so that thepeat accumulates somewhat therein, and is only moved along by the actionof the stcanr pressure, comparatively slowly, so as to become equalizedin temperature throughout the mass by the contact of the pieces of peatwith each other, so that,

when the peatissue's from the lower end of the pipe 1. within thechamberl, the aqueous portions will immediately pass off in the form of vapor,and the peat itself is delivered progressivcly'by the plunger m. forcingit through the nozzle n.

This plunger m is actuated by the pit-man 0 and crank 1).

The steam passes from the chamber 1 to the pugniill a through the tube3, and this tube s opens into the upper part of the casing above thepeat, so as to come directly into contact with the same, and anyparticles of peat-dust carried over with the steam are deposited uponthe moist peat, and the vapors thence pass by the opening ainto thespace between the casings a, and heat the contents of the pug-mill, andany water of condensation or vapors pass away by an opening at t.

'lhc vapors arising from the contents of the'png- I mill also pass offthrong-"lithe opening 1 into the space between the casings of thepug-mill.

' I claim as my invention- 1. The pipe 2', passing through thefire-space or furnacc, combined with the steam-pipe h, that suppliessteam to force the peat through said pipe 1', substantially as and forthe purposes specified.

2. The enlargement or chamber 7;, in combination with the pipe '1, andsuperheated steam-pipe 71, as and for the purposes setforth.

3. The chamber I, plunger m, and nozzle n, in com-- bination with theset forth.

4. The pug-mill, made with the division e, and steamjacket, combinedwith the. pipe 8,, and passage from the upper partof the mill into thesteam space, for the purposes set forth. 1

Signed by me this 22d day of September, A. D.

Witnesses: THOS. GEO. WALKER.

pipes 1, k, and s, for the purposes Guns. H. SMITH, Gno. T. PINCKNEY.

